Doorlock



April 2 8, 1925.

A. C. BAL LBACH DOORLOCK Filed June 0, 192s 2 Shee'cs-SheeI l amm? April2s, 1925;.v A

A. C. BALLBACH DOORLOCK Fi1e d June 30, 1925 2 Sheets-Sheet 2 a aPatented Apr. 28, 1925.

ALFRED C.' BALLBACHQOF DEWIROI'J?,V MICHIGAN# i To all lwhom t mayconcern: 1

Be it known that I, ALFRED (lBnnninioir, W a citizen ofthe United Statesof America, residing at Detroit, in thencounty of llifayne- 5 and Stateof Michigan,v have inventedfcertain new and useful.improvements inDoor-vlocks, of which the following is a speciiifv cation, reterencebeing hadtherein to `the accompanying drawings.

This invention `relates `to door .locks and has l special reference `toakey controlled, knob actuating, double bolt lock that maybeadvantageously used inconnection` with garage doors to lock edges lof a.door relative to door lock mechanism is intended i for hingedverticaldoors to` lock the upper and lower ends of thedoors, butthelocking mechanism is" applicable to a `sliding door and may vbe usedhorizontally ot the door to lock side edges thereof.

My inventionaims to provide a locking mechanism of ther-above typewherein reciprocable bolt-s may be `automatically actuated whena doorisfclosed to look the door,

said bolts being articulated vwith knob actuatingmeans by which thebolts` may bel retracted. rIhe knob actuating ,means iscontrolled` by akey operated mechanism and all ot the mechanismfis coinpactly `arrangedfor mounting on `a .door so that vthe mechanism mayl be operated fromeither sideof thedoor; l

My door lock will be hereinafter,described and then claimedandreteren'ce willinow be had to the drawing wherein y Figure l is avertical sectional view ot a portion of the door and lock showing thegreater part of the mechanism; 40

with a cover `plate removed;

Fig. 5 .is a horizontal sectional view of the lock taken on the linelll-III oi Fig. 1; l? 4f is a perspective view ot garage. doors providedwith a. lock in accordance with any invention, and

Fig. 5 is a longitudinal sectional view ot one ct `the spring` pressedbolts of the door lock.

Considering an installation off the door lock reference will first behad to Fig. a showingvertically disposed hinged garage doors 1 tramey orjamb. `The- Fig.4 2 is a. front elevation of thesameand .2swingable.relative to eachother and\ adapted to beflocke'd in a closed positionrelra ative to .a floorfor pavement Band a =door trame t, both providedVwith sockets or 55 keepers 5, one of which is shown 'in connection withthe floor 3. The doorl has a meeting rail 6 adapted to overlap the door2, at the outer side/thereof,` and on the inner side of the'door 1, attheupper and lower ends there- 60 ot, are vertically alining casings 6contain ingslidable beveled bolts 7 which are held normally extended bythe expansive force l of springs, so thatfsaid bolts maybe retracted byengagement with the keepers 5 'to auto--65 inaticallysnapinto saidkeepers when the door 1 is swung toa closed position. The

' inner ends of theslidable bolts 7 areloosely connected to verticallyalinin'glrods 9 with the loose connections 10 permitting` oi the 70slide bolts being retracted by engagement with the keepers t, withoutshifting :the rods 9.-

The edge ofthe doorLintermediate the casings 6, is provided with twoopenings 1 1` 'I5v l andf12, the latter communicating with end recessesland 14: `Mounted over thefrecess 13 and the inner end of theopening-,11m a lock plate 15 held inV place by screws 16., At zthe upperend of theY lock -platel isk e0 an opening 16a registeringwith theopening-l 11 and on saidfplate is a casing 17l having a cylindricalchamber 18 and a rectangular chamber 19, both of which 4are adapted tobe closed by a cover plate' 2O suitably mounted 85 on thecasingl?. y y

The cylindrical chamber 18 communicates.

with the openings 11 and 16a and' `free 'toi rotate in the openings 11-andltis a knobv shaft 21 having shanks Q Zand 232 One of 90 the shanks23 "extends through Van escutcheon plate 2li, suitably secured to" theouter side of the meetingrail (i, `and this particular vshank has anoutside knob Aor crank 25@` The other shank`23 uextends through the 95cover plate 20,` and'. escutcheonfplate 26 Carried therebyyand 1sprovided with a knob i or crank 27.

On the knob shaft Ql'within the chamber 18, is a double crank 28 towhich 'the ends of 100 the rods) are connected, said rods extendingthrough openings 29 provided therefor in the casing 17 with one or bothoi said rods provided with turn-buckle or take-up device 30.

Fixed in the recess 1l by screws 31 is a conventional form ot keyoperated lock mechanism 32 having` its bolt 33 provided with anextension 34 extending through the opening 12 into a. rotatable members35 carried by the lock plate 15 and partly housed in a recess 3G ot saidlock plato. rlhe rotatable member extends through an anchor plate 37mounted in the recess 13 as anchoring means for the screws 81, and saidrotatable member has outstruck cam `portions 38, the purpose ot whichwill hereinafter appear.

Mounted on the shank 22 ot the knob bolt '21 and rotatable in thechamber 18 is a eircular head 89 provided with a notch 4.-() to receivethe head L11 of a plunger e2, said plunger head being slidable in agroove or way 43 connecting the chambers 18 and 19 ot the casing 17 Theplunger head l1 is provided with anti-frictional rollers le so as toreduce friction on periphery of circular head and easily slide in thenotch and the groove 118. l/Vith the plunger head l1 extending' into thenotch l0 ot the head 39 the knob shaft 21 is locked against rotation andconsequently the rods 9 cannotbe shifted to retract the spring` pressedbolts Y.

The plunger 4:2 extends through a detachable horizontally disposedpartition in the chamber 19 and incireling said plunger, between thepartition l5 and the plunger head l1 is a coiled expansion spring 46holding the plunger normally elevated, either in the notch 40 or againstthe head 39 et the knob shaft 21.

On the lower end of the plunger 4-2 is a notched head l? providingclearance for the lowermost rod 9 and said notched head is normallyengaged by the cam portions 38 of the rotatable member 35. rlfhe notchedhead is also normally engaged by cam portions 4-.8 of another rotatablemember 49, carried by the cover plate 20, said rotatable member having aconventional term of knob or crank 50.

Without unlocking the lock mechanism 32 the knob may be turned, ineither direction, to lower the plunger' head L1-1 and release the head89 so that the knob 27 may be used to rotate the shaft 21 and manuallyretract the bolts 7.

The lock mechanism 32 may be actuated by its key to turn the rotatablemember 35 to retract the plunger head t1 or set t-he plunger head in alowered position, so that-the knob bolt 21 may be rotated by either otthe knobs 25 or 27 to retract the spring pressed bolts T.

From the outer sideA oit the door 1 it is necessary to operate the lockmechanism before the knob 25 can be used, but at the inner side of thedoor the knob 50 can be used at any time independent of the lockmechanism 32 to release the knob shaft 21 so that the knob 27 can beused to rotate the knob shaft.

lt is thought that the operation and utility ot the doei' lock will beapparent without further description, and while in the drawing there isillust-rated a preferred embodiment olf my invention, it is to beunderstood that the structural elements are susceptible to such changesas are permissible by the appended claims.

Vilhat l claim is 1. A lock comprising` spring pressed bolts, a knobshalt, rods connecting said spring pressed bolts to said knob shaft sothat said shaft may retract said bolts, a head on said knob shaftprovided with a notch, a plunger provided with ant-i-rictional devicesadapted to engage in the notch ot said head and prevent rotaton ot saidknob shaft, and a key controlled lock mechanism adapted to retract saidplunger to release said knob shaft.

2. A. lock as claimed in claim 1, and a head on the lower end ot saidplunger a knob actuated rotatable member coaxially of said keycontrolled lock mechanism, cam members operatable by said key controlledlock mechanism and said knob actuated rotatable member adapted todepress the lower head of said plunger, sait knob actuated rotatablemember being adapted for retracting said plunger independent of said keycontrolling lock mechanism.

3. A lock comprising bolts, a lock casing, a shalt, rods extending intosaid lock casing and connecting` said bolts and shaft so that said shaftmay actuate said bolts, a head on said shaft, a plunger adapted toengage said head and prevent actuation of said shaft, a head on thelower end of said plunger cut away to provide clearance lor one of saidrods, and cam members engageable with opposite sides of said plungerhead and operatable independent of each other tor depressingsaid plungerto release said shafthead.

l. A lock as claimed in claim 8, wherein one of said cam members, is keycontrolled.

5. ln a lock, a bolt actuating shaft, a plunger adapted to lock saidshaft, a head on said plunger', rotatable members at opposite sides otsaid plunger having outstruck cam members normally engaging said headand adapted to depress said head to retract said plunger, and meansholding said plunger normally extended to lock said shaft.

(3. ln a lock, a bolt actuating shaft, a plunadapted to lock said shaft,a head on said plunger, (3o-axial rotatable members at opposte sides ofsaid plunger, said members members being operatable independent of 10lavng outstruok oam .porto s normally eneach other. `gauging said headand adapte to depress said In testimony whereof I a-HX my signature headto retract said plunger, means hold- `in presence of two Witnesses. ingsaid plunger normally extended to look said shaft, a key operated lockmechanism ALFRED C. BALLBACH. 'for eontrollngone of said rotatable mem-Witnesses: bers, and a knob for controlling the other KARL I-I. BUTLER,

of said. rotatable members, 'said rotatable ANNA M. Donn.

